Sir John Stuart Lilleyman (born 9 July 1945) is a British paediatric haematologist.
[1] His specialization is childhood leukemia and idiopathic thrombocytopenic purpura.
[2] He was president of the Royal College of Pathologists during the Alder Hey organs scandal.
[2] In 2004, he became medical director of the National Patient Safety Agency (NPSA).
[3] In 1991, the Royal College of Pathologists awarded him its first Distinguished Service Medal for establishing the United Kingdom's system of pathology laboratory accreditation.